268 lines
9.5 KiB
Python
Executable File
268 lines
9.5 KiB
Python
Executable File
from flask import Blueprint, abort, jsonify
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import os
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import json
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from routes.utils.celery_tasks import (
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get_task_info,
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get_task_status,
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get_last_task_status,
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get_all_tasks,
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cancel_task,
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retry_task
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)
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prgs_bp = Blueprint('prgs', __name__, url_prefix='/api/prgs')
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# The old path for PRG files (keeping for backward compatibility during transition)
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PRGS_DIR = os.path.join(os.getcwd(), 'prgs')
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@prgs_bp.route('/<task_id>', methods=['GET'])
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def get_prg_file(task_id):
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"""
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Return a JSON object with the resource type, its name (title),
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the last progress update, and, if available, the original request parameters.
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This function works with both the old PRG file system (for backward compatibility)
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and the new task ID based system.
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Args:
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task_id: Either a task UUID from Celery or a PRG filename from the old system
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"""
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try:
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# First check if this is a task ID in the new system
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task_info = get_task_info(task_id)
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if task_info:
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# This is a task ID in the new system
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original_request = task_info.get("original_request", {})
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last_status = get_last_task_status(task_id)
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return jsonify({
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"type": task_info.get("type", ""),
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"name": task_info.get("name", ""),
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"artist": task_info.get("artist", ""),
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"last_line": last_status,
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"original_request": original_request,
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"display_title": original_request.get("display_title", task_info.get("name", "")),
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"display_type": original_request.get("display_type", task_info.get("type", "")),
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"display_artist": original_request.get("display_artist", task_info.get("artist", ""))
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})
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# If not found in new system, try the old PRG file system
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# Security check to prevent path traversal attacks.
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if '..' in task_id or '/' in task_id:
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abort(400, "Invalid file request")
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filepath = os.path.join(PRGS_DIR, task_id)
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with open(filepath, 'r') as f:
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content = f.read()
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lines = content.splitlines()
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# If the file is empty, return default values.
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if not lines:
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return jsonify({
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"type": "",
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"name": "",
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"artist": "",
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"last_line": None,
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"original_request": None,
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"display_title": "",
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"display_type": "",
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"display_artist": ""
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})
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# Attempt to extract the original request from the first line.
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original_request = None
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display_title = ""
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display_type = ""
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display_artist = ""
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try:
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first_line = json.loads(lines[0])
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if isinstance(first_line, dict):
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if "original_request" in first_line:
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original_request = first_line["original_request"]
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else:
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# The first line might be the original request itself
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original_request = first_line
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# Extract display information from the original request
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if original_request:
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display_title = original_request.get("display_title", original_request.get("name", ""))
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display_type = original_request.get("display_type", original_request.get("type", ""))
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display_artist = original_request.get("display_artist", original_request.get("artist", ""))
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except Exception as e:
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print(f"Error parsing first line of PRG file: {e}")
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original_request = None
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# For resource type and name, use the second line if available.
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resource_type = ""
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resource_name = ""
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resource_artist = ""
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if len(lines) > 1:
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try:
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second_line = json.loads(lines[1])
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# Directly extract 'type' and 'name' from the JSON
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resource_type = second_line.get("type", "")
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resource_name = second_line.get("name", "")
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resource_artist = second_line.get("artist", "")
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except Exception:
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resource_type = ""
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resource_name = ""
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resource_artist = ""
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else:
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resource_type = ""
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resource_name = ""
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resource_artist = ""
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# Get the last line from the file.
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last_line_raw = lines[-1]
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try:
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last_line_parsed = json.loads(last_line_raw)
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except Exception:
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last_line_parsed = last_line_raw # Fallback to raw string if JSON parsing fails.
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return jsonify({
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"type": resource_type,
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"name": resource_name,
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"artist": resource_artist,
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"last_line": last_line_parsed,
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"original_request": original_request,
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"display_title": display_title,
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"display_type": display_type,
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"display_artist": display_artist
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})
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except FileNotFoundError:
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abort(404, "Task or file not found")
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except Exception as e:
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abort(500, f"An error occurred: {e}")
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@prgs_bp.route('/delete/<task_id>', methods=['DELETE'])
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def delete_prg_file(task_id):
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"""
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Delete a task's information and history.
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Works with both the old PRG file system and the new task ID based system.
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Args:
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task_id: Either a task UUID from Celery or a PRG filename from the old system
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"""
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try:
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# First try to delete from Redis if it's a task ID
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task_info = get_task_info(task_id)
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if task_info:
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# This is a task ID in the new system - we should cancel it first
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# if it's still running, then clear its data from Redis
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cancel_result = cancel_task(task_id)
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# Use Redis connection to delete the task data
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from routes.utils.celery_tasks import redis_client
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# Delete task info and status
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redis_client.delete(f"task:{task_id}:info")
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redis_client.delete(f"task:{task_id}:status")
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return {'message': f'Task {task_id} deleted successfully'}, 200
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# If not found in Redis, try the old PRG file system
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# Security checks to prevent path traversal and ensure correct file type.
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if '..' in task_id or '/' in task_id:
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abort(400, "Invalid file request")
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if not task_id.endswith('.prg'):
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abort(400, "Only .prg files can be deleted")
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filepath = os.path.join(PRGS_DIR, task_id)
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if not os.path.isfile(filepath):
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abort(404, "File not found")
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os.remove(filepath)
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return {'message': f'File {task_id} deleted successfully'}, 200
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except FileNotFoundError:
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abort(404, "Task or file not found")
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except Exception as e:
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abort(500, f"An error occurred: {e}")
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@prgs_bp.route('/list', methods=['GET'])
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def list_prg_files():
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"""
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Retrieve a list of all tasks in the system.
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Combines results from both the old PRG file system and the new task ID based system.
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"""
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try:
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# Get tasks from the new system
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tasks = get_all_tasks()
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task_ids = [task["task_id"] for task in tasks]
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# Get PRG files from the old system
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prg_files = []
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if os.path.isdir(PRGS_DIR):
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with os.scandir(PRGS_DIR) as entries:
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for entry in entries:
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if entry.is_file() and entry.name.endswith('.prg'):
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prg_files.append(entry.name)
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# Combine both lists
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all_ids = task_ids + prg_files
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return jsonify(all_ids)
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except Exception as e:
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abort(500, f"An error occurred: {e}")
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@prgs_bp.route('/retry/<task_id>', methods=['POST'])
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def retry_task_endpoint(task_id):
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"""
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Retry a failed task.
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Args:
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task_id: The ID of the task to retry
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"""
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try:
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# First check if this is a task ID in the new system
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task_info = get_task_info(task_id)
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if task_info:
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# This is a task ID in the new system
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result = retry_task(task_id)
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return jsonify(result)
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# If not found in new system, we need to handle the old system retry
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# For now, return an error as we're transitioning to the new system
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return jsonify({
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"status": "error",
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"message": "Retry for old system is not supported in the new API. Please use the new task ID format."
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}), 400
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except Exception as e:
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abort(500, f"An error occurred: {e}")
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@prgs_bp.route('/cancel/<task_id>', methods=['POST'])
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def cancel_task_endpoint(task_id):
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"""
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Cancel a running or queued task.
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Args:
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task_id: The ID of the task to cancel
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"""
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try:
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# First check if this is a task ID in the new system
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task_info = get_task_info(task_id)
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if task_info:
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# This is a task ID in the new system
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result = cancel_task(task_id)
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return jsonify(result)
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# If not found in new system, we need to handle the old system cancellation
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# For now, return an error as we're transitioning to the new system
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return jsonify({
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"status": "error",
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"message": "Cancellation for old system is not supported in the new API. Please use the new task ID format."
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}), 400
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except Exception as e:
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abort(500, f"An error occurred: {e}")
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